sound/soc/codecs/ak4535.c

   1 /*
   2  * ak4535.c  --  AK4535 ALSA Soc Audio driver
   3  *
   4  * Copyright 2005 Openedhand Ltd.
   5  *
   6  * Author: Richard Purdie <richard@openedhand.com>
   7  *
   8  * Based on wm8753.c by Liam Girdwood
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #include <linux/module.h>
  16 #include <linux/moduleparam.h>
  17 #include <linux/init.h>
  18 #include <linux/delay.h>
  19 #include <linux/pm.h>
  20 #include <linux/i2c.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/slab.h>
  23 #include <sound/core.h>
  24 #include <sound/pcm.h>
  25 #include <sound/pcm_params.h>
  26 #include <sound/soc.h>
  27 #include <sound/initval.h>
  28
  29 #include "ak4535.h"
  30
  31 #define AK4535_VERSION "0.3"
  32
  33 /* codec private data */
  34 struct ak4535_priv {
  35         unsigned int sysclk;
  36         enum snd_soc_control_type control_type;
  37 };
  38
  39 /*
  40  * ak4535 register cache
  41  */
  42 static const u8 ak4535_reg[AK4535_CACHEREGNUM] = {
  43         0x00, 0x80, 0x00, 0x03,
  44         0x02, 0x00, 0x11, 0x01,
  45         0x00, 0x40, 0x36, 0x10,
  46         0x00, 0x00, 0x57, 0x00,
  47 };
  48
  49 static const char *ak4535_mono_gain[] = {"+6dB", "-17dB"};
  50 static const char *ak4535_mono_out[] = {"(L + R)/2", "Hi-Z"};
  51 static const char *ak4535_hp_out[] = {"Stereo", "Mono"};
  52 static const char *ak4535_deemp[] = {"44.1kHz", "Off", "48kHz", "32kHz"};
  53 static const char *ak4535_mic_select[] = {"Internal", "External"};
  54
  55 static const struct soc_enum ak4535_enum[] = {
  56         SOC_ENUM_SINGLE(AK4535_SIG1, 7, 2, ak4535_mono_gain),
  57         SOC_ENUM_SINGLE(AK4535_SIG1, 6, 2, ak4535_mono_out),
  58         SOC_ENUM_SINGLE(AK4535_MODE2, 2, 2, ak4535_hp_out),
  59         SOC_ENUM_SINGLE(AK4535_DAC, 0, 4, ak4535_deemp),
  60         SOC_ENUM_SINGLE(AK4535_MIC, 1, 2, ak4535_mic_select),
  61 };
  62
  63 static const struct snd_kcontrol_new ak4535_snd_controls[] = {
  64         SOC_SINGLE("ALC2 Switch", AK4535_SIG1, 1, 1, 0),
  65         SOC_ENUM("Mono 1 Output", ak4535_enum[1]),
  66         SOC_ENUM("Mono 1 Gain", ak4535_enum[0]),
  67         SOC_ENUM("Headphone Output", ak4535_enum[2]),
  68         SOC_ENUM("Playback Deemphasis", ak4535_enum[3]),
  69         SOC_SINGLE("Bass Volume", AK4535_DAC, 2, 3, 0),
  70         SOC_SINGLE("Mic Boost (+20dB) Switch", AK4535_MIC, 0, 1, 0),
  71         SOC_ENUM("Mic Select", ak4535_enum[4]),
  72         SOC_SINGLE("ALC Operation Time", AK4535_TIMER, 0, 3, 0),
  73         SOC_SINGLE("ALC Recovery Time", AK4535_TIMER, 2, 3, 0),
  74         SOC_SINGLE("ALC ZC Time", AK4535_TIMER, 4, 3, 0),
  75         SOC_SINGLE("ALC 1 Switch", AK4535_ALC1, 5, 1, 0),
  76         SOC_SINGLE("ALC 2 Switch", AK4535_ALC1, 6, 1, 0),
  77         SOC_SINGLE("ALC Volume", AK4535_ALC2, 0, 127, 0),
  78         SOC_SINGLE("Capture Volume", AK4535_PGA, 0, 127, 0),
  79         SOC_SINGLE("Left Playback Volume", AK4535_LATT, 0, 127, 1),
  80         SOC_SINGLE("Right Playback Volume", AK4535_RATT, 0, 127, 1),
  81         SOC_SINGLE("AUX Bypass Volume", AK4535_VOL, 0, 15, 0),
  82         SOC_SINGLE("Mic Sidetone Volume", AK4535_VOL, 4, 7, 0),
  83 };
  84
  85 /* Mono 1 Mixer */
  86 static const struct snd_kcontrol_new ak4535_mono1_mixer_controls[] = {
  87         SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG1, 4, 1, 0),
  88         SOC_DAPM_SINGLE("Mono Playback Switch", AK4535_SIG1, 5, 1, 0),
  89 };
  90
  91 /* Stereo Mixer */
  92 static const struct snd_kcontrol_new ak4535_stereo_mixer_controls[] = {
  93         SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG2, 4, 1, 0),
  94         SOC_DAPM_SINGLE("Playback Switch", AK4535_SIG2, 7, 1, 0),
  95         SOC_DAPM_SINGLE("Aux Bypass Switch", AK4535_SIG2, 5, 1, 0),
  96 };
  97
  98 /* Input Mixer */
  99 static const struct snd_kcontrol_new ak4535_input_mixer_controls[] = {
 100         SOC_DAPM_SINGLE("Mic Capture Switch", AK4535_MIC, 2, 1, 0),
 101         SOC_DAPM_SINGLE("Aux Capture Switch", AK4535_MIC, 5, 1, 0),
 102 };
 103
 104 /* Input mux */
 105 static const struct snd_kcontrol_new ak4535_input_mux_control =
 106         SOC_DAPM_ENUM("Input Select", ak4535_enum[4]);
 107
 108 /* HP L switch */
 109 static const struct snd_kcontrol_new ak4535_hpl_control =
 110         SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 1, 1, 1);
 111
 112 /* HP R switch */
 113 static const struct snd_kcontrol_new ak4535_hpr_control =
 114         SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 0, 1, 1);
 115
 116 /* mono 2 switch */
 117 static const struct snd_kcontrol_new ak4535_mono2_control =
 118         SOC_DAPM_SINGLE("Switch", AK4535_SIG1, 0, 1, 0);
 119
 120 /* Line out switch */
 121 static const struct snd_kcontrol_new ak4535_line_control =
 122         SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 6, 1, 0);
 123
 124 /* ak4535 dapm widgets */
 125 static const struct snd_soc_dapm_widget ak4535_dapm_widgets[] = {
 126         SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0,
 127                 &ak4535_stereo_mixer_controls[0],
 128                 ARRAY_SIZE(ak4535_stereo_mixer_controls)),
 129         SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0,
 130                 &ak4535_mono1_mixer_controls[0],
 131                 ARRAY_SIZE(ak4535_mono1_mixer_controls)),
 132         SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0,
 133                 &ak4535_input_mixer_controls[0],
 134                 ARRAY_SIZE(ak4535_input_mixer_controls)),
 135         SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
 136                 &ak4535_input_mux_control),
 137         SND_SOC_DAPM_DAC("DAC", "Playback", AK4535_PM2, 0, 0),
 138         SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0,
 139                 &ak4535_mono2_control),
 140         /* speaker powersave bit */
 141         SND_SOC_DAPM_PGA("Speaker Enable", AK4535_MODE2, 0, 0, NULL, 0),
 142         SND_SOC_DAPM_SWITCH("Line Out Enable", SND_SOC_NOPM, 0, 0,
 143                 &ak4535_line_control),
 144         SND_SOC_DAPM_SWITCH("Left HP Enable", SND_SOC_NOPM, 0, 0,
 145                 &ak4535_hpl_control),
 146         SND_SOC_DAPM_SWITCH("Right HP Enable", SND_SOC_NOPM, 0, 0,
 147                 &ak4535_hpr_control),
 148         SND_SOC_DAPM_OUTPUT("LOUT"),
 149         SND_SOC_DAPM_OUTPUT("HPL"),
 150         SND_SOC_DAPM_OUTPUT("ROUT"),
 151         SND_SOC_DAPM_OUTPUT("HPR"),
 152         SND_SOC_DAPM_OUTPUT("SPP"),
 153         SND_SOC_DAPM_OUTPUT("SPN"),
 154         SND_SOC_DAPM_OUTPUT("MOUT1"),
 155         SND_SOC_DAPM_OUTPUT("MOUT2"),
 156         SND_SOC_DAPM_OUTPUT("MICOUT"),
 157         SND_SOC_DAPM_ADC("ADC", "Capture", AK4535_PM1, 0, 0),
 158         SND_SOC_DAPM_PGA("Spk Amp", AK4535_PM2, 3, 0, NULL, 0),
 159         SND_SOC_DAPM_PGA("HP R Amp", AK4535_PM2, 1, 0, NULL, 0),
 160         SND_SOC_DAPM_PGA("HP L Amp", AK4535_PM2, 2, 0, NULL, 0),
 161         SND_SOC_DAPM_PGA("Mic", AK4535_PM1, 1, 0, NULL, 0),
 162         SND_SOC_DAPM_PGA("Line Out", AK4535_PM1, 4, 0, NULL, 0),
 163         SND_SOC_DAPM_PGA("Mono Out", AK4535_PM1, 3, 0, NULL, 0),
 164         SND_SOC_DAPM_PGA("AUX In", AK4535_PM1, 2, 0, NULL, 0),
 165
 166         SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4535_MIC, 3, 0),
 167         SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4535_MIC, 4, 0),
 168         SND_SOC_DAPM_INPUT("MICIN"),
 169         SND_SOC_DAPM_INPUT("MICEXT"),
 170         SND_SOC_DAPM_INPUT("AUX"),
 171         SND_SOC_DAPM_INPUT("MIN"),
 172         SND_SOC_DAPM_INPUT("AIN"),
 173 };
 174
 175 static const struct snd_soc_dapm_route ak4535_audio_map[] = {
 176         /*stereo mixer */
 177         {"Stereo Mixer", "Playback Switch", "DAC"},
 178         {"Stereo Mixer", "Mic Sidetone Switch", "Mic"},
 179         {"Stereo Mixer", "Aux Bypass Switch", "AUX In"},
 180
 181         /* mono1 mixer */
 182         {"Mono1 Mixer", "Mic Sidetone Switch", "Mic"},
 183         {"Mono1 Mixer", "Mono Playback Switch", "DAC"},
 184
 185         /* Mic */
 186         {"Mic", NULL, "AIN"},
 187         {"Input Mux", "Internal", "Mic Int Bias"},
 188         {"Input Mux", "External", "Mic Ext Bias"},
 189         {"Mic Int Bias", NULL, "MICIN"},
 190         {"Mic Ext Bias", NULL, "MICEXT"},
 191         {"MICOUT", NULL, "Input Mux"},
 192
 193         /* line out */
 194         {"LOUT", NULL, "Line Out Enable"},
 195         {"ROUT", NULL, "Line Out Enable"},
 196         {"Line Out Enable", "Switch", "Line Out"},
 197         {"Line Out", NULL, "Stereo Mixer"},
 198
 199         /* mono1 out */
 200         {"MOUT1", NULL, "Mono Out"},
 201         {"Mono Out", NULL, "Mono1 Mixer"},
 202
 203         /* left HP */
 204         {"HPL", NULL, "Left HP Enable"},
 205         {"Left HP Enable", "Switch", "HP L Amp"},
 206         {"HP L Amp", NULL, "Stereo Mixer"},
 207
 208         /* right HP */
 209         {"HPR", NULL, "Right HP Enable"},
 210         {"Right HP Enable", "Switch", "HP R Amp"},
 211         {"HP R Amp", NULL, "Stereo Mixer"},
 212
 213         /* speaker */
 214         {"SPP", NULL, "Speaker Enable"},
 215         {"SPN", NULL, "Speaker Enable"},
 216         {"Speaker Enable", "Switch", "Spk Amp"},
 217         {"Spk Amp", NULL, "MIN"},
 218
 219         /* mono 2 */
 220         {"MOUT2", NULL, "Mono 2 Enable"},
 221         {"Mono 2 Enable", "Switch", "Stereo Mixer"},
 222
 223         /* Aux In */
 224         {"Aux In", NULL, "AUX"},
 225
 226         /* ADC */
 227         {"ADC", NULL, "Input Mixer"},
 228         {"Input Mixer", "Mic Capture Switch", "Mic"},
 229         {"Input Mixer", "Aux Capture Switch", "Aux In"},
 230 };
 231
 232 static int ak4535_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 233         int clk_id, unsigned int freq, int dir)
 234 {
 235         struct snd_soc_codec *codec = codec_dai->codec;
 236         struct ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);
 237
 238         ak4535->sysclk = freq;
 239         return 0;
 240 }
 241
 242 static int ak4535_hw_params(struct snd_pcm_substream *substream,
 243                             struct snd_pcm_hw_params *params,
 244                             struct snd_soc_dai *dai)
 245 {
 246         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 247         struct snd_soc_codec *codec = rtd->codec;
 248         struct ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);
 249         u8 mode2 = snd_soc_read(codec, AK4535_MODE2) & ~(0x3 << 5);
 250         int rate = params_rate(params), fs = 256;
 251
 252         if (rate)
 253                 fs = ak4535->sysclk / rate;
 254
 255         /* set fs */
 256         switch (fs) {
 257         case 1024:
 258                 mode2 |= (0x2 << 5);
 259                 break;
 260         case 512:
 261                 mode2 |= (0x1 << 5);
 262                 break;
 263         case 256:
 264                 break;
 265         }
 266
 267         /* set rate */
 268         snd_soc_write(codec, AK4535_MODE2, mode2);
 269         return 0;
 270 }
 271
 272 static int ak4535_set_dai_fmt(struct snd_soc_dai *codec_dai,
 273                 unsigned int fmt)
 274 {
 275         struct snd_soc_codec *codec = codec_dai->codec;
 276         u8 mode1 = 0;
 277
 278         /* interface format */
 279         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 280         case SND_SOC_DAIFMT_I2S:
 281                 mode1 = 0x0002;
 282                 break;
 283         case SND_SOC_DAIFMT_LEFT_J:
 284                 mode1 = 0x0001;
 285                 break;
 286         default:
 287                 return -EINVAL;
 288         }
 289
 290         /* use 32 fs for BCLK to save power */
 291         mode1 |= 0x4;
 292
 293         snd_soc_write(codec, AK4535_MODE1, mode1);
 294         return 0;
 295 }
 296
 297 static int ak4535_mute(struct snd_soc_dai *dai, int mute)
 298 {
 299         struct snd_soc_codec *codec = dai->codec;
 300         u16 mute_reg = snd_soc_read(codec, AK4535_DAC);
 301         if (!mute)
 302                 snd_soc_write(codec, AK4535_DAC, mute_reg & ~0x20);
 303         else
 304                 snd_soc_write(codec, AK4535_DAC, mute_reg | 0x20);
 305         return 0;
 306 }
 307
 308 static int ak4535_set_bias_level(struct snd_soc_codec *codec,
 309         enum snd_soc_bias_level level)
 310 {
 311         switch (level) {
 312         case SND_SOC_BIAS_ON:
 313                 snd_soc_update_bits(codec, AK4535_DAC, 0x20, 0);
 314                 break;
 315         case SND_SOC_BIAS_PREPARE:
 316                 snd_soc_update_bits(codec, AK4535_DAC, 0x20, 0x20);
 317                 break;
 318         case SND_SOC_BIAS_STANDBY:
 319                 snd_soc_update_bits(codec, AK4535_PM1, 0x80, 0x80);
 320                 snd_soc_update_bits(codec, AK4535_PM2, 0x80, 0);
 321                 break;
 322         case SND_SOC_BIAS_OFF:
 323                 snd_soc_update_bits(codec, AK4535_PM1, 0x80, 0);
 324                 break;
 325         }
 326         codec->dapm.bias_level = level;
 327         return 0;
 328 }
 329
 330 #define AK4535_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 331                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
 332                 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
 333
 334 static struct snd_soc_dai_ops ak4535_dai_ops = {
 335         .hw_params      = ak4535_hw_params,
 336         .set_fmt        = ak4535_set_dai_fmt,
 337         .digital_mute   = ak4535_mute,
 338         .set_sysclk     = ak4535_set_dai_sysclk,
 339 };
 340
 341 static struct snd_soc_dai_driver ak4535_dai = {
 342         .name = "ak4535-hifi",
 343         .playback = {
 344                 .stream_name = "Playback",
 345                 .channels_min = 1,
 346                 .channels_max = 2,
 347                 .rates = AK4535_RATES,
 348                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 349         .capture = {
 350                 .stream_name = "Capture",
 351                 .channels_min = 1,
 352                 .channels_max = 2,
 353                 .rates = AK4535_RATES,
 354                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 355         .ops = &ak4535_dai_ops,
 356 };
 357
 358 static int ak4535_suspend(struct snd_soc_codec *codec, pm_message_t state)
 359 {
 360         ak4535_set_bias_level(codec, SND_SOC_BIAS_OFF);
 361         return 0;
 362 }
 363
 364 static int ak4535_resume(struct snd_soc_codec *codec)
 365 {
 366         snd_soc_cache_sync(codec);
 367         ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 368         return 0;
 369 }
 370
 371 static int ak4535_probe(struct snd_soc_codec *codec)
 372 {
 373         struct ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);
 374         int ret;
 375
 376         printk(KERN_INFO "AK4535 Audio Codec %s", AK4535_VERSION);
 377
 378         ret = snd_soc_codec_set_cache_io(codec, 8, 8, ak4535->control_type);
 379         if (ret < 0) {
 380                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 381                 return ret;
 382         }
 383         /* power on device */
 384         ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 385
 386         snd_soc_add_controls(codec, ak4535_snd_controls,
 387                                 ARRAY_SIZE(ak4535_snd_controls));
 388         return 0;
 389 }
 390
 391 /* power down chip */
 392 static int ak4535_remove(struct snd_soc_codec *codec)
 393 {
 394         ak4535_set_bias_level(codec, SND_SOC_BIAS_OFF);
 395         return 0;
 396 }
 397
 398 static struct snd_soc_codec_driver soc_codec_dev_ak4535 = {
 399         .probe =        ak4535_probe,
 400         .remove =       ak4535_remove,
 401         .suspend =      ak4535_suspend,
 402         .resume =       ak4535_resume,
 403         .set_bias_level = ak4535_set_bias_level,
 404         .reg_cache_size = ARRAY_SIZE(ak4535_reg),
 405         .reg_word_size = sizeof(u8),
 406         .reg_cache_default = ak4535_reg,
 407         .dapm_widgets = ak4535_dapm_widgets,
 408         .num_dapm_widgets = ARRAY_SIZE(ak4535_dapm_widgets),
 409         .dapm_routes = ak4535_audio_map,
 410         .num_dapm_routes = ARRAY_SIZE(ak4535_audio_map),
 411 };
 412
 413 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 414 static __devinit int ak4535_i2c_probe(struct i2c_client *i2c,
 415                                       const struct i2c_device_id *id)
 416 {
 417         struct ak4535_priv *ak4535;
 418         int ret;
 419
 420         ak4535 = kzalloc(sizeof(struct ak4535_priv), GFP_KERNEL);
 421         if (ak4535 == NULL)
 422                 return -ENOMEM;
 423
 424         i2c_set_clientdata(i2c, ak4535);
 425         ak4535->control_type = SND_SOC_I2C;
 426
 427         ret = snd_soc_register_codec(&i2c->dev,
 428                         &soc_codec_dev_ak4535, &ak4535_dai, 1);
 429         if (ret < 0)
 430                 kfree(ak4535);
 431         return ret;
 432 }
 433
 434 static __devexit int ak4535_i2c_remove(struct i2c_client *client)
 435 {
 436         snd_soc_unregister_codec(&client->dev);
 437         kfree(i2c_get_clientdata(client));
 438         return 0;
 439 }
 440
 441 static const struct i2c_device_id ak4535_i2c_id[] = {
 442         { "ak4535", 0 },
 443         { }
 444 };
 445 MODULE_DEVICE_TABLE(i2c, ak4535_i2c_id);
 446
 447 static struct i2c_driver ak4535_i2c_driver = {
 448         .driver = {
 449                 .name = "ak4535-codec",
 450                 .owner = THIS_MODULE,
 451         },
 452         .probe =    ak4535_i2c_probe,
 453         .remove =   __devexit_p(ak4535_i2c_remove),
 454         .id_table = ak4535_i2c_id,
 455 };
 456 #endif
 457
 458 static int __init ak4535_modinit(void)
 459 {
 460         int ret = 0;
 461 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 462         ret = i2c_add_driver(&ak4535_i2c_driver);
 463         if (ret != 0) {
 464                 printk(KERN_ERR "Failed to register AK4535 I2C driver: %d\n",
 465                        ret);
 466         }
 467 #endif
 468         return ret;
 469 }
 470 module_init(ak4535_modinit);
 471
 472 static void __exit ak4535_exit(void)
 473 {
 474 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 475         i2c_del_driver(&ak4535_i2c_driver);
 476 #endif
 477 }
 478 module_exit(ak4535_exit);
 479
 480 MODULE_DESCRIPTION("Soc AK4535 driver");
 481 MODULE_AUTHOR("Richard Purdie");
 482 MODULE_LICENSE("GPL");